We invite proposals for Special sessions within a general scope of the conference.

Special Sessions supplement the regular program of DSTA 2021 and are intended to provide a sample of the state-of-the-art and highlight important research directions in a field of special interest to DSTA participants. Each of the sessions is expected to last 1.5 hours, counting 5 speakers to be invited by the organizers of the session. It is also possible to invite a multiple of this number (10, 15 speakers). In such case, the session is divided into parts, each counting 5 speakers. Presentations will be oral, and only by invitation of the session organizers. Both organizers and invited contributors will be required to register to the conference and submit their paper at the DSTA 2021 website, following the same deadlines as in the call for contributed papers. The review process will use the DSTA 2021 online system and will be fully supervised by the session organizers. All invited speakers will be provided with relevant certificates and submitted papers will be published in Springer Proceedings in Mathematics and Statistics or in a special issue of one of high-impact journals (see Journal Special Issues). Special Session organizers will benefit from 20% discount on the conference fee and relevant certificates.

Please note that in case less than 5 presentations are registered for the special session, the Chair of the conference and the Organization Committee reserve the right to re-assign these presentations into regular sessions.

If you are interested in submitting a proposal, please prepare a single PDF file containing the following information:

  • Title of the Special session
  • Name of proposer(s) – max. 2
  • Email of the main contact person
  • Short (up to half A4 page) biography of the proposer(s)
  • Brief description of the motivation, highlighting the novelty/impact and timeliness of the topic
  • Relevance to the scope of DSTA and related topics
  • List of potential authors and tentative titles

The following sessions have already been accepted (by order of application):

No.: 1
Title: "Advances in fractional order calculus and applications"

  • Organizers: Carla Pinto, Instituto Superior de Engenharia do Porto (ORCID: 0000-0002-0729-1133) ; Cristina Muresan, Technical University of Cluj-Napoca, Romania
  • Fractional order differentiation is a generalization of classical integer differentiation to real or complex orders. In the last couple of decades, the use of fractional order calculus in modelling and control applications has seen a tremendous increase in research papers. This is mainly due to arguments recommending fractional calculus as an optimal tool to describe the dynamics of complex systems and to enhance the performance and robustness of control systems. Among these, fractional order PID controllers tuning, implementation and experimental validation occupy an important place. However, there are still many issues and open problems that need to be addressed in this area. This special session welcomes papers dealing with fractional calculus in modelling and control applications and aims at presenting some recent developments in this area of research. We welcome any contribution within the general scope of the Special Session theme.

No.: 2
Title: "Nonlinear behavior, performance, and control designs for complex structures in Civil, Aeronautical, Aerospace and Ocean Engineering"

  • Organizers: Jose Manoel Balthazar, Department of Mechanical Engineering, State University of Sao Paulo at Bauru, Baru SP, Brazil ; Elżbieta Jarzębowska, Warsaw University of Technology, Power and Aeronautical Engineering Department, Institute of Aeronautics And Applied Mechanics, Warsaw, Poland ; Angelo Marcelo Tusset, Department of Mathematics, Federal Technological University of Paraná, Ponta Grossa, PR, Brazil
  • The focus of this special session are discussions on modeling, performance, simulation, and control of dynamical behavior of complex mechatronic structures from but not limited to civil, aeronautical, aerospace and those related to ocean engineering, such as airplanes, rockets, satellites, ships, ground vehicles, underwater vehicles, offshore structures etc. Research from different aspects is welcome, for example how these problems can be understood and solved in view of numerical, computational, and theoretical approaches. Also, experimental investigations of these problems to validate mathematical and numerical models are very welcome.

No.: 3
Title: "Mathematical modeling of nonlinear systems involving interacting with medium"

  • Organizers: Marat Dosaev, Lomonosov Moscow State University, Russia ; Yury Selyutskiy, Lomonosov Moscow State University, Russia
  • Interaction between rigid bodies and different types of media takes place in many problems applications pertaining to different areas of engineering. Mathematical simulation of effects (which are often highly nonlinear) resulting from such interaction is of both fundamental and application interest. The session will consider different problems in nonlinear dynamics of such systems, including dry friction and viscoelastic support effects in problems of contact between bodies, interaction between flow and bodies, mechanical behavior of molded composite material interacting with rigid walls, and so on. Construction of mathematical models and study of specific features of such dynamic systems is crucial for efficient design and control of the corresponding technical objects. Special attention will be paid to construction and analysis of closed semi-empirical dynamic models containing a small number of parameters. Questions of parametric optimization, bifurcations, damping or excitation of oscillations, control, stabilization of program motions and equilibria will be discussed.

No.: 4
Title: "Global problems in nonlinear dynamics"

  • Organizers: Giuseppe Habib, Budapest University of Technology and Economics, Hungary ; Valeria Settimi, Polytechnic University of Marche, Italy
  • Global analysis has proved to be essential to enhance the overall understanding of systems' nonlinear dynamics, as well as to unveil the actual safety of nonlinear systems in different environments. Despite the enormous developments of analytical and numerical methods for the local analysis of nonlinear systems, the global stability of a dynamical state can be granted only after performing expensive numerical simulations, so that development of tools and features for global analysis is one of the most challenging topics of nonlinear dynamics. The objective of this special session is to bring together scientists dealing with global problems in nonlinear dynamics, with the objective of generating fruitful discussions about the most recent development in the field. Research topics covering different aspects of global dynamics, such as identification of invariant structures in the phase space, integrity measurement, construction of multi-dimensional basins of attraction, analysis of erosion process, robustness estimation, and global bifurcations, are welcome. One of the aim of the special session is to cover analytical, numerical and experimental aspects of this topic.

No.: 5
Title: "Piecewise-smooth systems"

  • Organizers: Viktor Avrutin, University of Stuttgart, Germany ; Gerard Olivar-Tost, University of Aysen, Chilean Patagonia
  • Although theory and applications, including numerical simulations have been developed mainly for smooth nonlinear dynamical systems, in the last 30 years more and more researchers from engineering and sciences have worked on piecewise-smooth models. Areas such as power electronics (circuits including any kind of switches) and mechanics (systems with impacts and/or dry friction), as well as systems involving thresholds, constraints, and decision making processes in economics and social sciences have benefited from this PWS framework. The phase space of these models can be divided into pieces with different dynamics, through so-called switching manifolds where the rules governing the dynamics change.From the pure mathematical point of view, PWS systems are still extremely challenging, since many results regarding stability and bifurcations proved for smooth systems do not work for PWS ones.

No.: 6
Title: "New prospects in vibration mitigation strategies"

  • Organizers: Giuseppe Failla, University of Reggio Calabria, Italy ; Roberta Santoro, University of Messina, Italy
  • Vibration mitigation is a key issue in civil, mechanical and aerospace engineering. A considerable research effort is now focusing on developing new materials, principles and devices to overcome current limitations. Scope of the Special Session is to gather contributions on innovative concepts as:

    • Locally-resonant metamaterials
    • New damping materials (carbon nanotube composites, shape memory alloys, metal particles, photorheological fluids)
    • Surface damping treatments for structural components
    • Tuned resonant masses, inerter-based absorbers, tuned liquid column dampers
    • Viscoelastic damping devices with fractional law

    Contributions may include (but are not restricted to) applications in the following fields:

    • Vibration mitigation of structural, mechanical and aerospace components
    • Seismic isolation
    • Vibration/oscillation mitigation in offshore wind turbines